Starting a line loopback, Line loopback, Llb) – HP 3162 User Manual
Page 85: Table 5-10
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Monitoring and Testing
5-21
3162-A2-GB20-40
August 2000
Table 5-10.
Valid Loopback Combinations
LLB
PLB
DLB
RLB
DCLB
DTLB
LLB
N/A
NO
YES
YES
NO
YES
PLB
NO
N/A
YES
NO
NO
YES
DLB
YES
YES
N/A
NO
YES
YES
RLB
YES
NO
NO
N/A
NO
YES
DCLB
NO
NO
YES
NO
YES
(on
separate
ports)
YES
(on
separate
ports)
DTLB
YES
YES
YES
YES
YES
(on
separate
ports)
YES
(on
separate
ports)
Starting a Line Loopback
The Line Loopback command (LLB) loops the received signal on the network
interface back to the network without change.
496-14319-02
CSU
DSU
NETWORK
INTERFACE
DTE
(DSX-1)
ALL 1s
LLB
PORT 1
PORT 2
ALL 1s
ALL
1s
"
Procedure
To perform a Line loopback:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Network & DTE Tests.
3. For the Line Loopback command (under Local Loopbacks), select Start.
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